Evaporator.



G. H. GRIMM, DECD.

H. W. VAUGHAN, EXECUTOR.

I EvAPoRAToR. APPLICATION FILED AUG. I4. 1914.

Mm i. N m im. w Y B 2 SHEETS-SHEET I.

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. DEC

G. H. GRIMM H. W. VAUGHAN, EXECUTOR.

EVAPORATOR.

APPL-lrcATloN FILED Aue.14. 1914.

Patented NOV. 2, 1915.

2 SHEETS-SHEET 2.

ATTUHNEYS COLUMBIA PLANDURAPM C0.,wAsHlNGTON, D. C.

. Fig.'1; Fig.V 4 is an enlarged sectionalside` or ous'rfivn H. GRIMM, `iniiicnnsni).

EVAPORATOR; l

ghum, fruit jellies and other food products.

The object Aof the inventionr is to provide a new and improved evaporator arranged to l permit convenient'regulation of theflow ofv the liquid from one pan, to another, to prevvent scum from passing from one paninto the next following one, andlto allow aready interchange of the last finishing pan with' the preceding pan to causethe removal of malate of lime deposited on and adheringto the bottom of the finishing pan.

. In order to accomplish thedesired result, use is made of a main reducing or vboiling pan, finishing pans and removable couplings s connecting the outlet of Vone pan with the inlet of the next following pan to allow ofv interchanging the finishing pan and to allow of drawing oi'' the finished product-from the last pan. Y

1A practical embodiment of tlieiinvention is represented in the accompanying draw# ings forming a part ofthisspecilication, in

which similary characters of referenceindif cate corresponding parts in all tlieviews.

. igure l is a perspective view oftheevaporator; Fig.` 2 is anlenla'rged cross section of the valved outlet for the main reducing or boiling pan; Fig. Bis a' longitudinal section of thefadjacent ends of the main reducing panv and the next following finishing pan, the section being on the-line of i elevation of thevalved connection between the main reducing pan and the neXtjfollow-l 'ing finishing pan; Fig. 5 is a sectional plan view of one of the valves on the line .5 5 vof Fig. ll; Fig. 6 is a similar Vview of one of the nipples andthe corresponding end of the coupling engaging the nipple the .sectiony being on theline 6-6'of Fig, 4,; and Fig.'7

Applcation'ledllugust 14,1914. `Sieriallpo.856,775.

- va sectional side` elevationof thev outlet draw-off valve for the last finishing pan with the valve in closed position. i,

@The evaporator in its generalconstruction GUsTAvn HENRYGRIMM, or nUTLANi'ivnni/ionr; HERMAN w. VAUGHAN iiXEcU'ion specifiatin of Letters ratent. PaftentedNovg, :1915. n.

as shown in Fig/1 consists of the f urnaceA r;

on the frontend ofI which isset the'iiiain reducing or boiling ,panf B connected .with a suitablegsourcefof sap supply, and adjacent the rear end of the pany-,B arelocated interchangeable finishing pans C, C .which can be readily interchanged one-relative toL the.

otheryand to the-main reducingy pan B, as

.hereinafter more 'fullyexplained The interior construction ofthe pans 13,7() and C` isthe same asin pans ofeva'porat'ors Vof this .fii

type so that further description of the same` isnot deemed necessary, it being suflicient to ,statethat the liquid passed into the main re?v ducing pan B lflows.backward.andfforward in a longitudinal direction while theV liquid z passing into thefinishingpans C, Cf travels from one sideito theother and back again. .The bottoms-G2 ofthe finishingpans C,

C are on alhigher level than the bottom B of theinain reducing pan B1as plainly-indicated Figs. .3 and l, and the 'main reducf ing pan B is provided at the side Bzfadja-4 cent the bottom B with-fan outletwopening B3 '.(see'Figs. v2 `and 5) opening rinto .a hori- Zontal branch pipe D ofalvertically dise. 1

Aposed valve vcasing D', the'branchpipe D having al'flange D2 soldered or lotherwise sef l vcured -to the outer face of the side B2. The

lowerfend of the valvejcasing D is provided with a: nipple D3 arranged a distancebelow the branch pipe D andV the outlet opening Y B3,k and vthe bore of this nipple Vis preferably madegvconical to `forma valve seat'` for valve E mounted to slide up andfdown in the casing D. The valve E is provided with 90 two Vvalve disks E, E2 both adapted tojbe seated in the bore of the nipple D3 :solasto tightlyl close the lsaid nipple D3-whenever it kisddesired to do so.. The stein- E3v of the valve E extends upward `a distance beyond they top of the valve casingjD to bewithin convenient reach of the voperator for moving .thev'valve Eintojan open Aor a closed Aposi-V tion. The stern E3 isprovided .with` a spring:y

E4, the free ends of which bear against the inner surface of the valve casing D so as to hold the valve E in open position.

The nipple D3 is adapted to be engaged by one end F of a U-shaped hollow coupling F connected at its other end F2 with a nipple GY similar to the nipple D3 and held on the lower end of a valve casing G provided with a transversely extending branch pipe G2 having a flange G3 soldered or otherwise secured to the outer face of the side C2 of the finishing pan C. In the valve casing G is arranged a valve H similar to the valve E and adapted to be seated in the conical bore of the nipple G to close vthe same. The valve H is provided with two disks 'l-l, H2 mounted on a stem H3 extending beyond the upper end of the valve casing G to be within convenient reach of the operator. On the valve stem H3 is secured a spring H4 similar tothe spring E4 to hold the valve H in open position. The upper portion of' the branch pipe 'G2 registers with an inlet opening G3 formed in the side C2 of the finishing pan C Yto allow the liquid to flow from the pan B by way of the opening B3, branch pipe D, cas'- ing D, nipple D2, coupling F,nipple G, casing G, branch pipe G2 and opening C2 into the finishing pan C.

.By reference to F ig.4 3 it will be noticed that the inlet opening (J3 is yon a level with the outlet opening B3 to prevent any scum Vthat may form in the main reducing pan B from passing intothe first finishing pan C. The ends F and F2 of the coupling F are provided with set screws F3 engag'ng annular recesses D4 and G4 formedexteriorly in the nipples D3 and G. It is understood that when the set screws F3 are unscrewed the coupling F can be readily removed from theenipp'les D3 and G', the valves E and YH thenbeing closed position to prevent outflow of the liquid from either pan B or C.

The side C2 of the panV Gis provided with an'outlet opening similar to the opening C3,

and connected ,with the branch pipe l of a valve casing l similar in every respect to the valve casing G and likewise containing a valveH under the control of the operator. The lower end of' the valve casing l is provided with a nipplellf similar to the nipple Gv engaged by one end of a hollow coupling F4 similar to the coupling F and connected with a nipple on a valve casing J similar to the valve casings I and G, and provided witha branch pipe J connected with inlet openings C3l opening into the second lin-V ishing tanl C.

The valve casing J contains a valve H the same as above described relative to the valve casing G.` It will be noticed that when the y valves-y in the valve casings l and J are opened then the liquid from the pan C can flow by way of the casings I and J and coupling F4 into the second finishing pan C from which the liquid can be withdrawn periodically or continually, as the case may be, through an outlet opening similar to the opening C2 and connected with a branch pipe K of a valve casing K containing a valve H (see Fig. 7) similar to the valve in the casings J, l and G previously described. l/Vhen the valve in the valve casing K is seated on the nipple K2 the outflow of the liquid from the pan C is prevented but when the said valve in the casing K is opened the liquid can flow out of the pan C by way of' the nipple K2 to suitable receptacle arranged below the said nipple.

It is understood that the coupling F4 is removably attached to the nipples of the changed then the casing J is connected by the couplingF with the casing D and the casing K is connected by the coupling F4 with the casing G, while the casing l and its valve form the draw-ofi" means for drawing ofi'l the liquid from the last finishing pan which is now the pan C. After the pans C, C are interchanged and the evaporator is again used then the liquid in flowing through lthe now first finishing pan C tends to remove the malate of lime deposited on the bottom of this pan during Va previous operation and this malate of lime becomes a sediment in the first finishing pan (C) and is not liable to pass intov the last finishing pan owing to the outlet opening of the pan C being below the normal level of the liquid in the pan C. The malate of lime is removed from the pan with the scum, in the usual manner.

lt will be noticed that by adjusting the valves E and H in the several valve casings D, G, lf, J and K, the flow of' the liquid can be regulated to a nicety to insure a proper evaporation of the liquid with a View to produce syrup or other products of a high quality.

t will be noticed that when the pans C, C are interchanged as above described, the couplings F and F4 can be readily engaged with the corresponding nipples even should there be a slight variation in the positions of the pans on their supports, and the couplings can be'readily fastened in position on the nipples on screwing up the set screws. The coupling arrangement provides sufficient exibility between the coupled-up pans to compensate forthe expansion and contraction ofthe parts without danger of warping or ybinding the parts.

It is understood that Ido not limit myself to the number of finishingpans employed, as i nected with each other and the end valve can be used for drawing off the finished product' whenever it is desired to doso. s

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

l. An evaporator, comprising a main reducing pan, finishing pans, an outlet and an inlet on the pans adjacent abutting sides, a valve casingconnected with the outlet and the inlet, a hollow coupling detachably secured to and establishing communication between the valve casing of one panand the valve casing of the neXt following pan, and valves in the said valve casings for regulating the flow of the sap from one pan into Vthe next following, for closing the outlet and inlet when the coupling is removed. and for using the valved outlet of the last finishing pan for drawing off the inishedproduct.

2. An evaporator, comprising a main reducing pan having an outlet, Aa finishing pan adjacent theV said main reducing pan and having its bottom on a higher level than the bottom of the said main reducing pan, the said finishing pan having an inlet on the l level of the said outlet for the'said main reducing pan, and a coupling connecting the said outlet with the said inlet.l

3. An evaporator, comprising a main reducing pan Vhaving an outlet opening in one side, the bottom of the opening being flush with the bottom of the said pan, a valve casing attached to the said. pan and into which leads the said outlet opening, the said valve casing having a nipple at a po-int below the entrance of the said outlet opening, a finishing pan adjacent the said main reducing pan and having a bottom on a higher level than the bottom of the said main reducing pan, the said' finishing pan being provided in one side with an inlet opening on the level Yof the said outlet opening of the said main reducing pan, a valve casing attached to the said finishing pan and into which leads the saidV inlet opening, the valve casing for the said finishing pan being provided with a nipple at a point below the entrance of the said inlet opening, valve plugs movable in the said casings and adapted to be seated on the corresponding seats, and a U-shaped tubular coupling removably connecting the saidl nipples with each other.

4L. Anevaporator, comprising a main reducing pan having an outlet opening'in one Siae, the beata afihegepeningbeng Hush fvvlitlif-the bottom-0f -the"`said pair, :af valve `casingli-attached vtojthe'-salidy pan' :and into which l'leads the lsaid outletwopening, the said jva'lve casing 'having ani'pp'le at a fpointibelo'w'the entrance of the said outlet opening, ya vfinpan andhaving a bottom on ahigherlevel in yone side with an inlet opening on the level of the said outlet opening of the said mainl reducing pan, a valve casing attached to the said finishing pan and into which leads the said inlet opening, thel valve kcasing for the ysaid finishing pan being providedV with al nipple at a point below the entrance *ofthe*l said inleto-pening, valve plugs movable in the said casings and adapted to be seated on Y the corresponding seats, springs heldl on i the said valve plugs andl bearing against the inner faces of the said valve casings to hold with the bottom of the said pan, `a valve casing 'attached tothe said pan and into which leads thev lsaid outlet opening, the saidvalve casing having'a nipple at a point the valve plugs in position, and'avU-shaped tubular coupling removably connecting they below the entrance of the said outletl opening, a iinishing pan adjacent the said main' reducing pan and having a bottom on va higher level than thebottom of thevmain reducing pan, the said finishing pan beingv provided at one side with an inlet opening on the level of the said outletopening of the main reducing pan, avvalve casing attached to the iinishing pan and into which leads the said inlet opening, the said valve casing for the nishing pan being provided with a nipple at a point below the entrance of the:V l

said inlet opening, thenipple's having tapering bo-res, valve plugs movable in the said valve casings and each having two valve disks adapted to be seated in the correspondn having its ends fitting the said nipples', and

fastening means for removably fastening the coupling ends to the said nipples.

6. Anevapo-rator provided with a finishing pan having two valve casings, each hav-' ing, and a couplingfor removable engagement with either nipple to permit of couat its lower end with'a nipple, and each ing a coupling'nipple, a valve in each cas ling nipples,7a VU-shaped tubular coupling Valve having a manually controlled valve name t0 this speccation in the presence of plugadapted t0 be seated on the said nipple, two subscribing Witnesses.

and a spring held on the said valve plug and Y engaging the inner face of the said casing GUSTAVE HENRY GRMM' 5 for holding the valve n an adjusted pos- Vtnesses:

tion. GEORGE N. HARMAN, rvIn testimony whereof I have signed my HENRY A. HARMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

